Kaehler differentials for fat point schemes in P^1xP^1

Elena Guardo, Martin Kreuzer, Tran N. K. Linh +1

Let $X$ be a set of $K$-rational points in $P^1\times P^1$ over a field $K$ of characteristic zero, let $Y$ be a fat point scheme supported at $X$, and let $R_Y$ be the bihomogen…